Jack motion



' NOV? 3 1931. A. RICHTER l 1,830,718

JACK MOTION Filed April a. 1930 Patented Nov. 3, 1931 UNITED s'ra'rizsr anrnua nrcn'ran, or nnnnrsnonnemamr non norton.

Application led April 8, 1980, Serial No. 442,680, 'and Germany April 1 1, 19219.

The present invention relates to a tion in flat hosiery frames.

In fiat hosiery frames such as cotton frames and the like the facing bar-hitherto I had to actuate also the jacks when withdrawing the sinkers and to handle their spring blocks, too, if necessary. In machines of the newer type this has already been changed and the facing bar relieved in so far as the spring blocks are removed com letely from the jacks at the insertion of the acing bar which has to Apush back the jacks only. Y ccording to the resent invention, the facin bar is relieved) also of this operation ei er com letely or to a large extent owing to the withdrawal of the jacks by their spring blocks or other suitable adjusting means.

Several embodiments of the invention are illustrated in the accompanying drawings, in 2 0 which Figure 1 is a cross section of the means required for adjusting the jacks, sinkers, facing. bar, s ring blocks and the like, the spring blocks eing pressed against the noses of the jacks during the sinking of the loops; Fig. 2 is a view of the spring blocks engaging the noses of the jacks; and Figs. 3 and 4 are modifications of the invention.

Referring to the drawings, the sinkers 1 are horizontally displaoeable in the known manner in the sinker bar 2 by means of the jacks 7 and the vfacing bar 9. On the jacks 7 act the slur 8 and the spring blocks 24 which engage the noses 23 of the jacks 7 rotatably supported in the usual way by their carrier bar 21. The bars 25 of the spring blocks 24 are securedto a lever 27 which rotates about the bolt 26 and the other arm' 50 of which is swung to and fro by a cam 16 adapted to rotate with the main shaft 30. In this way the o spring blocks 24 can be lifted off temporarily from the noses 23.

The parts described move in such a .way that at the moment when the sinkers 1 are brought forward completely b the jacks 7 For thispurpose, an indentation 51 is pro-- vided on the cam 16. The jacks are then e 5 pushed back by the sinkers 1 withdrawn by the facili bar 9 to the extent that the nose 23 hes on a ower level than the ends 52 of the springs 24, whereupon the spring blocks 24 again approach the jack noses 23 and lie above them so that they pull back the jacks. 7- 65 by their noses 23 owing to the pressure trans `mittedfrom the cam. 16. Thus the facing In order to free the-facing bar 9 completely from the work of movin back the jacks 7, the bolt 26 of the -lever need not be secured firmly to the machine frame, but can be connected to a lever 33 adapted to swing about' the journal 34,011 the machine frame 5 and firmly connected with a second lever, 35, the guide roll 36 of'which is moved by a' cam 37 arranged on the main shaft 30. This cam is sha ed so that it will move up the s ring bloc rom the nose 23"'by the lever 27 and the f ree end of the spring 24 moves about the nose 23 and subsequently hugsthe up r side l l of the nose 23' according to Fig. 2, t e raising of the spring block 24 being caused by 8 the indentation 53 of the cam 37. When the roll 36 of the lever35 moves out of the drop 53, the spring block 24 is flowered again and engages the noses 23 of the arel thus moved back.

It is not absolutely necessary to move back the jacks 7 exclusively by means of the spring blocks 24. This operation could be carried out also by a guide -rod V40 movablyearranged o5 f on thev machine frame or carried by levers, according to Fig. 3, and adapted to engage an auxiliary arm 41 of each jack `7 and tol depress it whenever the jacks are to be moved away from the sinkers 2, in which case the 1 I 24 when the latter is lifted olf so i jacks which ,90 f

`1attained, if the sprin pring blocks 24 are simply moved to and Simplification of the drive of the jacks is blocks 24 engage a groove or notch 42 o the jacks 7. In this case the oscillatory motion of the spring blocks 24 can possibly be dispensed with completely, though it will be necessar to provide for motion in their lbngitudina direction, which can be effected in various ways. For example, it would be possible to arrange the lever 27 to which the bars 25 are secured longitudinally displaceably in the machine frame so that the lever 33 has to do only with the up and down motion of the lever 27. When this modification is used, attention should be paid that the spring blocks 24 do not get out of the range of the groove 42 during successive adjustment of the jacks 7 by the slur 8.

1. A jack motion in dat hosiery frames,`

comprising sinkers, jacks adapted to move the said sinkers forward and s ring blocks adapted to withdraw the said jacks jointly, said jacks havin@ grooved noses forming part thereof, and spring blocks adapted to engage with their endsin the said grooves and to swing, during their up and down movements, the said jacks forward and backward.

2. A flat hosiery frame comprising sinkers, jacks for moving the said sinkers forward and s ring blocks adapted to withdraw the sai jacks jointly, wherein the jacks are swungl backwardly from the facing bar which withdraws the sinkers, during the time that the spring blocks are entireiy lifted away therefrom, only to such extent that the lnoses of the jacks 11e at a lower level than the ends of the springs, whereupon the spring blocks again come into contact with the jacks but at points above their noses, and there y withdraw the same.

3. In a fiat hosiery frame as in claim 2, means whereby the spring blocks are arranged for up and down motion, in order to withdraw the jacks durin their downward movement before the latter ave been aected by the facing bar.

a. A fiat hosiery frame in accordance .with claim 2, having means whereby the adjusting device is arranved to be movable up and down in order to withdraw the jacks by their downward movement before the latter are affected by the facing bar.

5. A fiat hosiery frame as in claim` 2, wherein, after the jacks have completely brought the sinkers forward, the spring blocks are moved upwardly in such way that the spring ends thereof will be positioned above the noses of the jacks, so that upon their downward movement, which then fol lows, they will draw back the jacks.

6. A fiat hosiery frame as in claim 2 wherein the noses of the jacks are provided forward and upon a downward movement they will be swung backward.

In testimony whereof, I have affixed mysignature.

ARTHUR RICHTER. 

